CN105789241A - Organic light emitting display device with switchable display state and preparation method thereof - Google Patents
Organic light emitting display device with switchable display state and preparation method thereof Download PDFInfo
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- CN105789241A CN105789241A CN201410809459.6A CN201410809459A CN105789241A CN 105789241 A CN105789241 A CN 105789241A CN 201410809459 A CN201410809459 A CN 201410809459A CN 105789241 A CN105789241 A CN 105789241A
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Abstract
The invention relates to an organic light emitting display device with a switchable display state. The device comprises a drive substrate. A drive switch, a first electrode layer, an organic light emitting layer and a second electrode layer are successively stacked on the drive substrate. The drive switch comprises a first drive switch and a second drive switch. The first electrode layer comprises a first conductive layer and a second transparent conductive layer arranged on the first conductive layer. The first conductive layer comprises an A region transparent conductive layer and a B region conductive layer surrounding the A region transparent conductive layer. A gel electrolyte layer is arranged on the A region transparent conductive layer. When a drive voltage changes from 0 V to 5 V, the gel electrolyte layer can be switched from a light transmission state to a light reflection state gradually. The first drive switch is used for controlling the voltage on the A region transparent conductive layer. The second drive switch is used for controlling the voltage on the B region conductive layer. The resolution of the transparent display region of the device is same to that of a normal display.
Description
Technical field
The invention belongs to Transparence Display organic luminescent device technical field, it is specifically related to the organic light-emitting display device of a kind of changeable display state, namely can in the organic light-emitting display device can changed in transparent and normal display state, the preparation method that the invention still further relates to this organic light-emitting display device.
Background technology
Organic Light Emitting Diode (English full name is OrganicLight-EmittingDiode, referred to as OLED) is active illuminating device.Compare (the English full name LiquidCrystalDisplay of Thin Film Transistor-LCD in existing flat panel display, be called for short LCD), plasma display (English full name PlasmaDisplayPanel, it is called for short PDP), the organic light-emitting display device using Organic Light Emitting Diode has the advantages such as high-contrast, wide viewing angle, low-power consumption, volume are thinner, it is expected to become main flow flat panel display of future generation, is one of the maximum technology that receives publicity in current flat panel display.
Active array organic light emitting display device (English full name ActiveMatrixOrganicLightingEmittingDisplay, it is called for short AMOLED) as the one in organic light-emitting display device, utilize thin film transistor (TFT) (English full name ThinFilmTransistor, it is called for short TFT), collocation electric capacity storage signal, controls brightness and the GTG performance of Organic Light Emitting Diode.Each independent Organic Light Emitting Diode has complete negative electrode, organic function layer and anode, and anode covers a thin film transistor (TFT) array, forms a matrix.Active array organic light emitting display device have can in large size, power saving, the feature such as resolution is high, panel lasts a long time, therefore obtain great attention in Display Technique field.
Due to the autonomous characteristics of luminescence of AMOLED, it is not necessary to back lighting, therefore can realize Transparence Display, be following novel Display Technique.And existing active array organic light emitting display device part, by a part of region of subpixel area not depositing light-emitting material, thus realizing Transparence Display.For realizing the switching of normal display and Transparence Display, PDLC (PDLC polymerdispersedliquidcrystalPDLC) is set typically by the region at not depositing light-emitting material and can realize the switching of Transparence Display and normal display as switch, but owing to transparent part is not provided with luminescent material, therefore substantially reduce than resolution when normally showing during Transparence Display, display effect is poor, brings bigger limitation to a certain degree giving the use of user.
Summary of the invention
For this, the present invention is the problem that in prior art, the relatively normal display resolution of the display Transparence Display of changeable display state is decreased obviously, the organic light-emitting display device of a kind of changeable display state is provided, when this device Transparence Display and normal display, there is identical resolution.
Further, the preparation method that present invention also offers a kind of above-mentioned active array organic light emitting display device that can switch between normal display and Transparence Display.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of organic light-emitting display device of changeable display state, including driving substrate, at driving switch, the first electrode layer, organic luminous layer and the second electrode lay that described driving surface is cascading, described driving switch includes the first driving switch and second and drives switch；
The first described electrode layer includes the first conductive layer and is arranged on the second transparency conducting layer above described first conductive layer, described first conductive layer includes A district transparency conducting layer and the B district conductive layer around described A district transparency conducting layer, and described A district transparency conducting layer is provided with gel electrolyte layer；Described gel electrolyte layer can be converted to light reflection state by light transmission state gradually when driving voltage is changed by 0 volt to 5 volt；
Described first drives switch (2) to electrically connect with described A district transparency conducting layer (4), and described second drives switch (3) to electrically connect with described B district conductive layer (6).
Described gel electrolyte layer is driving the projection on substrate overlapping or on its interior with the projection on driving substrate of the described A district transparency conducting layer.
Described A district transparency conducting layer is identical with the material of described second transparency conducting layer or differs.
It is provided with reflective conductive layer between described B district conductive layer and described second transparency conducting layer.
Described reflective conductive layer is driving the projection on substrate overlapping or on its interior with the projection on driving substrate of the described B district conductive layer.Described reflective conductive layer is Ag layer or Al layer.
Described gel electrolyte layer is prepared from by silver ion inorganic salt, additional conductive cationic inorganic salt, solvent, bromide or iodide salt and high molecular polymer.
Described first drives switch and second to drive switch to drive switch for thin film transistor (TFT).
The preparation method of the organic light-emitting display device of a kind of changeable display state, comprises the steps:
Step A: switch driving making the first driving switch and second on substrate to drive；
Step B: drive switch and second to drive described first and form the first conductive layer on switch, and it is graphically formed A district transparency conducting layer and the B district conductive layer around described A district transparency conducting layer, making the first driving switch electrically connect with A district transparency conducting layer, second drives switch to electrically connect with described B district conductive layer；
Step C: form gel electrolyte layer on described A district transparency conducting layer, be formed over the second transparency conducting layer at B district conductive layer and gel electrolyte layer；
Step D: form pixel confining layers on the second transparency conducting layer, forms organic luminous layer in pixel confining layers；
Step E: form the second electrode lay and encapsulated layer on organic luminous layer.
As another embodiment, described step C is: described step C is: at the first conductive layer disposed thereon reflective conductive layer, and graphically remove the reflective conductive layer above A district transparency conducting layer, retain the reflective conductive layer on B district conductive layer, then deposits gel electrolyte, and graphically retain the gel electrolyte layer above A district transparency conducting layer, at gel electrolyte layer and reflective conductive layer disposed thereon the second transparency conducting layer.
The technique scheme of the present invention has the advantage that compared to existing technology
(1) organic light-emitting display device of the changeable display state of the present invention can switch in transparent and normal display state, its first electrode layer includes the first conductive layer and is arranged on the second transparency conducting layer above described first conductive layer, described first conductive layer includes A district transparency conducting layer and the B district conductive layer around described A district transparency conducting layer, and described A district transparency conducting layer is provided with gel electrolyte layer；Described gel electrolyte layer can be converted to light reflection state by light transmission state gradually when driving voltage is changed by 0 volt to 5 volt.Namely described gel electrolyte layer is light transmission state when driving voltage is 0 volt, it is now Transparence Display state equipped with the organic light-emitting display device of this electrode, it is light reflection state when driving voltage is 5 volts, is now normal display state equipped with the organic light-emitting display device of this electrode.When the voltage on being applied to gel electrolyte layer and executing changes between 1-5V voltage, it is possible to be that organic light-emitting display device has different Transparence Display states.
(2) the subpixel area normal sedimentation luminescent material of organic light-emitting display device of the present invention, the luminescent material of the subpixel area that gel electrolyte layer is corresponding can be luminous or not luminous when Transparence Display, if the luminescent material setting this region during Transparence Display is not luminous, then lower than resolution when normally showing during Transparence Display；If if the luminescent material in this region is luminous during Transparence Display, then identical with resolution when normally showing during Transparence Display, it is possible to adapt to various different demand.
(3) further, the active array organic light emitting display device of the present invention adopts the different voltage driving on-off control A district's transparency conducting layer and B district conductive layer, different voltage can be provided for A district transparency conducting layer and B district conductive layer, second drives switch can provide the voltage of normal display for B district conductive layer, voltage is provided when luminescence, time not luminous, voltage is closed.As long as so providing corresponding voltage just can realize the switching between normal display and Transparence Display as required, thus realizing two kinds of functions of a display.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiments of the invention and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the end luminescence organic light-emitting display device of the changeable display state of the present invention；
Wherein, accompanying drawing is labeled as:
1-drives substrate, 2-first to drive switch, and 3-second drives switch, 4-A district transparency conducting layer, 5-gel electrolyte layer, 6-B district conductive layer, 7-reflective conductive layer, 8 second transparency conducting layers, 9-pixel confining layers, 10-organic luminous layer, 11-the second electrode lay, 12-encapsulated layer.
Specific embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Referring to accompanying drawing, the certain exemplary embodiments according to the present invention is described.Here, when being described as ' attach ' to the second element by the first element, the first element can be directly connected to the second element, or is indirectly connected to the second element through one or more add ons.Further, for the sake of clarity, not necessarily some element is concisely eliminated for fully understanding the present invention.Additionally, identical accompanying drawing labelling refers to identical element all the time.
As shown in Figure 1, a kind of organic light-emitting display device of the changeable display state of the present invention, including driving substrate 1, driving switch, the first electrode layer, organic luminous layer 10 and the second electrode lay 11 being cascading above described driving substrate 1, described driving switch includes the first driving switch 2 and second and drives switch 3；The first described electrode layer includes the first conductive layer and is arranged on the second transparency conducting layer 8 above described first conductive layer, described first conductive layer includes A district transparency conducting layer 4 and the B district conductive layer 6 around described A district transparency conducting layer 4, and described A district transparency conducting layer 4 is provided with gel electrolyte layer 5；Described gel electrolyte layer 5 can be converted to light reflection state by light transmission state gradually when driving voltage is changed by 0 volt to 5 volt；Described first drives switch 2 in order to control the voltage on A district transparency conducting layer 4, and described second drives the switch 3 voltage for controlling on described B district conductive layer 6.Namely described gel electrolyte layer is light transmission state when driving voltage is 0 volt, and now organic light-emitting display device is Transparence Display state, is light reflection state when driving voltage is 5 volts, and now organic light-emitting display device is normal display state.When the voltage being applied in gel electrolyte layer changes between 1-5V voltage, it is possible to be that organic light-emitting display device has different Transparence Display states.
Described gel electrolyte layer 5 by silver ion inorganic salt, additional conductive cationic inorganic salt, solvent, smell compound or iodide salt, and high molecular polymer is prepared from.The gel electrolyte materials used in the present invention is not particularly limited, as long as the effect not damaging the present invention just can arbitrarily select.They can be any one the coagel electrolyte in inorganic compound or organic compound.These coagel electrolytes are by silver ion inorganic salt, additional conductive cationic inorganic salt, solvent, smell compound or iodide salt, and what high molecular polymer was prepared from.Gel electrolyte materials preparation method can also with reference to CN201410000043.X.
Described gel electrolyte layer 5 is driving the projection on substrate 1 overlapping or on its interior with the described A district transparency conducting layer 4 projection on driving substrate 1.Namely gel electrolyte layer 5 is positioned at the surface of described A district transparency conducting layer 4.
Described A district transparency conducting layer 4 and described second transparency conducting layer 8 material can be identical or differ, inorganic material or organic conductive polymer can be adopted, inorganic material is generally the metal that the work functions such as metal-oxide or gold, copper, silver such as tin indium oxide (ITO), zinc oxide, zinc tin oxide are higher, the optimized ITO that is chosen as, organic conductive polymer is preferably a kind of material in polythiophene/polyvinylbenzenesulfonic acid sodium (hereinafter referred to as PEDOT:PSS), polyaniline (hereinafter referred to as PANI).The preferred ITO of the present invention.
It is provided with reflective conductive layer 7 between described B district conductive layer 6 and described second transparency conducting layer 8.Described reflective conductive layer 7 is driving the projection on substrate 1 driving the projection on substrate 1 overlapping or on its interior with described B district conductive layer 6, and namely reflective conductive layer 7 is positioned at the surface of described second transparent electrode layer 6.Described reflective conductive layer 7 is Ag layer or Al layer.
Described driving substrate 1 is transparency carrier, it is possible to be glass substrate or flexible base board, and flexible base board adopts a kind of material in polyesters, polyimides compounds, and the present invention uses glass substrate.
The B district conductive layer 6 of the present invention can be used and select transparent electrode layer or opaque electrode floor, inorganic material or organic conductive polymer can be adopted, inorganic material is generally the metal that the work functions such as metal-oxide or gold, copper, silver such as tin indium oxide (ITO), zinc oxide, zinc tin oxide are higher, the optimized ITO that is chosen as, organic conductive polymer is preferably a kind of material in polythiophene/polyvinylbenzenesulfonic acid sodium (hereinafter referred to as PEDOT:PSS), polyaniline (hereinafter referred to as PANI).The preferred ITO of the present invention does anode.
The preparation method of the organic light-emitting display device of above-mentioned changeable display state, it is characterised in that comprise the steps:
Step A: make the first driving switch 2 and the second driving switch 3 on substrate 1 driving；Described first drives switch 2 and second to drive switch 3 to be thin film transistor switch, and its preparation method is conventional method；
Step B: drive switch 2 and second to drive formation of deposits the first conductive layer on switch 3 described first, and it is graphically formed A district transparency conducting layer 4 and the B district conductive layer 6 around described A district transparency conducting layer 4, namely etch away the conductive material between described A district transparency conducting layer 4 and B district conductive layer 6；Making the first driving switch 2 electrically connect with A district transparency conducting layer 4, second drives switch 3 to electrically connect with described B district conductive layer 6；
Described step C is: at the first conductive layer disposed thereon reflective conductive layer, and graphically remove the reflective conductive layer above A district transparency conducting layer 4, retain the reflective conductive layer 7 on B district conductive layer 6, described A district transparency conducting layer 4 is formed gel electrolyte layer 5, is formed over the second transparency conducting layer 8 in gel electrolyte layer 5 and reflective conductive layer 7.
In the first conductive layer disposed thereon layer of reflective material, described layer of reflective material is graphically removed the layer of reflective material above A district transparency conducting layer 4, form reflective conductive layer 7；Then deposits gel electrolyte, and graphically retain the gel electrolyte layer 5 above A district transparency conducting layer 4；At gel electrolyte layer 5 and reflective conductive layer 7 disposed thereon the second transparency conducting layer 8；
Step D: form pixel confining layers 9 on the second transparency conducting layer 8, forms organic luminous layer 10 in pixel confining layers 9；Organic luminous layer 10 is formed the second electrode lay 11 and encapsulated layer 12.The present embodiment adopts at luminescent layer subpixel area normal sedimentation luminescent material, the luminescent material of the subpixel area that gel electrolyte layer is corresponding can be luminous or not luminous when Transparence Display, if the luminescent material setting this region during Transparence Display is not luminous, then lower than resolution when normally showing during Transparence Display；If if the luminescent material in this region is luminous during Transparence Display, then identical with resolution when normally showing during Transparence Display, it is possible to adapt to various different demand.
Described pixel confining layers is normal pixels confining layers, makes array pattern including using Pillar material after graphical.
Described driving switch includes the first driving switch 2 and second and drives switch 3, and described first drives switch 2 in order to control the voltage on A district transparency conducting layer 4, and described second drives the switch 3 voltage for controlling on described B district conductive layer 6.Described first drives switch 2 and second to drive the thin film transistor (TFT) that switch 3 is conventional to drive switch.
Obviously, above-described embodiment is only for clearly demonstrating example, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation are still among protection scope of the present invention.
Claims (10)
1. the organic light-emitting display device of a changeable display state, including driving substrate (1), at driving switch, the first electrode layer, organic luminous layer (10) and the second electrode lay (11) that described driving substrate (1) top is cascading, it is characterized in that
Described driving switch includes the first driving switch (2) and second and drives switch (3)；
The first described electrode layer includes the first conductive layer and is arranged on the second transparency conducting layer (8) above described first conductive layer, described first conductive layer includes A district transparency conducting layer (4) and B district conductive layer (6) around described A district transparency conducting layer (4), and described A district transparency conducting layer (4) is provided with gel electrolyte layer (5)；Described gel electrolyte layer (5) can be converted to light reflection state by light transmission state gradually when driving voltage is changed by 0 volt to 5 volt；
Described first drives switch (2) to electrically connect with described A district transparency conducting layer (4), and described second drives switch (3) to electrically connect with described B district conductive layer (6).
2. the organic light-emitting display device of changeable display state according to claim 1, it is characterized in that, described gel electrolyte layer (5) is driving the projection on substrate (1) overlapping or on its interior with the projection in driving substrate (1) of described A district transparency conducting layer (4).
3. the organic light-emitting display device of changeable display state according to claim 1, it is characterised in that described A district transparency conducting layer (4) is identical with the material of described second transparency conducting layer (8) or differs.
4. the organic light-emitting display device according to the arbitrary described changeable display state of claim 1-3, it is characterised in that be provided with reflective conductive layer (7) between described B district conductive layer (6) and described second transparency conducting layer (8).
5. the organic light-emitting display device of changeable display state according to claim 4, it is characterized in that, described reflective conductive layer (7) is driving the projection on substrate (1) overlapping or on its interior with the projection in driving substrate (1) of described B district conductive layer (6).
6. the organic light-emitting display device of changeable display state according to claim 5, it is characterised in that described reflective conductive layer (7) is Ag layer or Al layer.
7. the organic light-emitting display device of changeable display state according to claim 1, it is characterized in that, described gel electrolyte layer (5) is prepared from by silver ion inorganic salt, additional conductive cationic inorganic salt, solvent, bromide or iodide salt and high molecular polymer.
8. the organic light-emitting display device of changeable display state according to claim 1, it is characterised in that described first drives switch (2) and second to drive switch (3) to drive switch for thin film transistor (TFT).
9. the preparation method of the organic light-emitting display device of a changeable display state, it is characterised in that comprise the steps:
Step A: drive switch (3) driving upper making the first driving switch (2) of substrate (1) and second；
Step B: drive switch (2) and second to drive switch (3) above to form the first conductive layer described first, and it is graphically formed A district transparency conducting layer (4) and B district conductive layer (6) around described A district transparency conducting layer (4), making the first driving switch (2) electrically connect with A district transparency conducting layer (4), second drives switch (3) to electrically connect with described B district conductive layer (6)；
Step C: form gel electrolyte layer (5) on described A district transparency conducting layer (4), is formed over the second transparency conducting layer (8) in B district conductive layer (6) and gel electrolyte layer (5)；
Step D: at the second transparency conducting layer (8) upper formation pixel confining layers (9), forms organic luminous layer (10) in pixel confining layers (9)；
Step E: form the second electrode lay (11) and encapsulated layer (12) on organic luminous layer (10).
10. preparation method according to claim 9, it is characterized in that, described step C is: at the first conductive layer disposed thereon reflective conductive layer, and graphically remove the reflective conductive layer of top, A district transparency conducting layer (4), retain the reflective conductive layer (7) in B district conductive layer (6), then deposits gel electrolyte, and graphically retain the gel electrolyte layer (5) above A district transparency conducting layer (4), at gel electrolyte layer (5) and reflective conductive layer (7) disposed thereon the second transparency conducting layer (8).
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| CN201410809459.6A CN105789241B (en) | 2014-12-22 | 2014-12-22 | A kind of organic light-emitting display device and preparation method thereof of changeable dispaly state |
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| CN201410809459.6A CN105789241B (en) | 2014-12-22 | 2014-12-22 | A kind of organic light-emitting display device and preparation method thereof of changeable dispaly state |
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| CN105789241B (en) | 2018-10-02 |
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